I bought a 2007 Citroen C4 SX HDI automatic on 22 April 2010 for £10,495. Within the first week it was signalling that the engine management system was faulty. The garage agreed to have the car inspected by an ex-Citroen franchise dealer who identified several faults. I was instructed to present the car at this garage for repair. This I did and faults were rectified. Within two days it was again identifying engine system faulty. I was again told to take it back to the garage. I did this and the garage told me it has an intermittent fault which they are unable to identify. Should I expect that this problem be resolved?